A neighborhood in the city of Hayward, California, had a problem with speeding cars. But after the usual approaches - enforcement, traffic engineering fixes, and even a public outreach - failed to yield results, the city decided to try something weird: unusual street signs to catch driver's attention.

"Let's juxtapose an unconventional message with a conventional medium to catch people's attention, " said city spokesman Frank Holland to SFGate, "If it starts a conversation, maybe people will change their behavior."

One of the signs warn pedestrian to first finish crossing the street before updating Facebook. Another tells drivers that they should use eyes, brakes and brain to navigate a downhill street.

The sign below warns drivers that 35 mph is the speed limit, not a suggestion.

No words whether the signs, which were produced and installed in January to the tune of $205 each, have any effects.